cmount.c

LFS.This is a kind of file system.

/* $Id: cmount.C,v 1.3 2001/04/22 07:24:39 dm Exp $ */

/*
 *
 * Copyright (C) 2001 David Mazieres ([e-mail])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 *
 */

#include "sfsmisc.h"
#include "cryptfsadm.h"
#include "arpc.h"
#include "crypt.h"

int
main (int argc, char **argv)
{
  setprogname (argv[0]);
  sfsconst_init ();

  if (argc != 2 && argc != 3)
    fatal << "usage: " << progname << "/ciphertext_dir [plaintext_name]\n";

  int fd = suidgetfd_required ("cryptfs");
  ref<aclnt> c = aclnt::alloc (axprt_stream::alloc (fd), cfsadm_prog_1);

  cfsadm_mount_arg arg;
  arg.path = argv[1];
  if (arg.path[0] != '/') {
    char buf[PATH_MAX];
    if (!getcwd (buf, sizeof (buf)))
      fatal ("cannot determine current working directory");
    buf[sizeof (buf) - 1] = '\0';
    arg.path = strbuf ("%s/", buf) << arg.path;
  }
  if (argc == 3)
    arg.name = argv[2];
  else if (char *p = strrchr (arg.path, '/'))
    arg.name = p + 1;
  else
    assert (!"getcwd did not return slash");
  arg.pwd = getpass ("Passphrase: ");

  u_int32_t res = EIO;
  c->scall (CFSADMPROC_MOUNT, &arg, &res);
  if (res)
    fatal << "cryptfs: " << strerror (res) << "\n";
  return 0;
}